CCNA资格认证考试及培训必读 英文本PDF电子书下载

1 What Is CCNA? 2

1 What Is CCNA? 2

CCNA Exam Philosophy 4

What Cisco Says about CCNA 4

What We Can Infer from What Cisco States 5

Summary of the CCNA Exam Philosophy 6

Determining Your Strengths and Weaknesses 7

Core Chapters Match the Major Topics in the CCNA Objectives 7

CCNA Exam Preparation Philosophy 7

Questions and Exercises That Are Harder Than the Actual Exam 8

Summary of the CCNA Exam Preparation Philosophy 9

Simulated Testing on the CD 9

Scenarios for Final Preparation 9

Analysis of CCNA Training Paths 10

Cisco s Recommended Courses 11

Analysis of Prerequisite Courses 17

The 60 Stated CCNA Objectives 19

List and Interpretation of the 60 Stated CCNA Objectives 20

Cross Reference to Book Chapters Covering an Objective 29

A Game Plan for CCNA Success 32

Your Final Preparation for the Exam 33

Summary 33

2 Understanding Cisco s Internetwork Operating System(IOS)Software 34

2 Understanding Cisco s Internetwork Operating System(IOS)Software 34

How to Best Use This Chapter 35

Do I Know This Already? Quiz 36

Routers: The IOS and Its User Interface 39

Hardware Review 39

Foundation Topics 39

Internetwork Operating System(IOS) 41

The Command-Line Interface(CLI) 41

Commands Made Easier on the CLI 43

Cisco Discovery Protocol(CDP) 45

Routers: Configuration Processes and the Configuration File 46

Example Configuration Process 49

Managing Configuration Files 51

Routers: Managing IOS Images 56

Upgrading an IOS Image into Flash Memory 57

Choosing Which IOS Image to Load 59

Q A 61

Scenarios 64

Scenario 2-1 64

Questions on Scenario 2-1 65

Scenario 2-2 66

Questions on Scenario 2-2 66

Answers to Scenarios 69

Scenario 2-1 Answers 69

Scenario 2-2 Answers 69

3 Understanding the OSI Reference Model 70

3 Understanding the OSI Reference Model 70

How to Best Use This Chapter 71

Do I Know This Already? Quiz 72

Foundation Topics 75

The OSI，TCP/IP，and Novell NetWare Network Protocol Architectures 75

OSI: Origin and Evolution 75

OSI Layers 76

Layering Benefits and Concepts 79

Layer Interactions 80

Connection-Oriented Protocols，Connectionless Protocols，and Flow Control 87

A Close Examination of OSI Data-Link(Layer-2)Functions 94

A Close Examination of OSI Layer 3 Functions 102

Q A 110

Scenarios 112

Scenario3-1 112

Scenario Answers 115

Answers to Task 1 for Scenario 3-1 115

Answers to Task 2 for Scenario 3-1 115

Answers to Task 3 for Scenario 3-1 117

4 Understanding LANs and LAN Switching 120

4 Understanding LANs and LAN Switching 120

How to Best Use This Chapter 122

Do I Know This Already? Quiz 123

Foundation Topics 126

LAN Overview 126

MAC Addresses 128

Ethernet Standards and Operation 130

Fast Ethernet 133

Ethernet LAN Segmentation 134

Transparent Bridging 135

LAN Segmentation Advantages (CCNA Objective 46) 135

LAN Segmentation Using Routers 139

LAN Segmentation Using Switches 141

LAN Switching and Virtual LANs 145

Virtual LANs 149

Spanning-Tree Protocol 152

How the Spanning-Tree Protocol Works 155

Noticing and Reacting to Changes in Network Topology 159

Reacting to Changes in the Spanning Tree 160

Q A 166

5 Network Protocols: Understanding the TCP/IP Suite and Novell NetWare Protocols 168

5 Network Protocols: Understanding the TCP/IP Suite and Novell NetWare Protocols 168

How to Best Use This Chapter 169

Do I Know This Already? Quiz 170

Foundation Topics 173

Functions at Each Layer 173

Transmission Control Protocol 173

User Datagram Protocol 177

Address Resolution Protocol 179

Internet Control Message Protocol 180

IP Addressing and Subnetting 184

IP Addressing Basics: Terminology and Concepts 184

IP Subnetting 191

Dissecting IP Addresses: Deriving Subnet Numbers 197

Dissecting IP Addresses: Deriving Broadcast Addresses 202

Configuration of IP 204

Using Secondary Addresses 213

IP Addressing with Frame Relay Subinterfaces 215

IPX Addressing and Routing 217

Internal Networks and Encapsulation Types 219

Configuration of IPX 223

Q A 232

Scenario 5-1: IP Addressing and Subnet Calculation 235

Scenarios 235

Scenario 5-2: IP Subnet Design with a Class B Network 238

Scenario 5-3: IP Subnet Design with a Class C Network 239

Scenario 5-4: IPX Examination 240

Scenario 5-5: IPX Configuration 247

Scenario Answers 249

Answers to Scenario 5-1:IP Addressing and Subnet Calculation 249

Answers to Scenario 5-2:IP Subnet Design with a Class B Network 250

Answers to Task 1 for Scenario 5-2 250

Answers to Task 2 for Scenario 5-2 251

Answers to Task 3 for Scenario 5-2 252

Answers to Scenario 5-3:IP Subnet Design with a Class C Network 253

Answers to Task 1 for Scenario 5-3 253

Answers to Task 2 for Scenario 5-3 254

Answers to Task 3 for Scenario 5-3 255

Answers to Scenario 5-4:IPX Examination 256

Answers to Task 1 for Scenario 5-5 258

Answers to Scenario 5-5:IPX Configuration 258

Answers to Task 2 for Scenario 5-5 259

Answers to Task 3 for Scenario 5-5 260

6 Understanding Routing 262

6 Understanding Routing 262

How to Best Use This Chapter 263

Do I Know This Already? Quiz 264

Foundation Topics 267

How Distance Vector Routing Protocols Work 267

Distance Vector Routing Protocols 270

Configuration of RIP and IGRP 280

The network Command 281

Split-Horizon and Infinity 284

IPX RIP，Plus SAP and GNS 291

Integrated Routing Protocols 298

Q A 303

Scenarios 305

Scenario 6-1: IP Configuration 1 305

Scenario 6-2: IP Configuration 2 306

Scenario 6-3: IP Addressing and Subnet Derivation 308

Scenario 6-4: IPX Examination 314

Scenario Answers 323

Answers to Scenario 6-1: IP Configuration 1 323

Answers to Scenario 6-2: IP Configuration 2 326

Answers to Scenario 6-3: IP Addressing and Subnet Derivation 328

Answers to Scenario 6-4: IPX Examination 330

7 Understanding Network Security 334

7 Understanding Network Security 334

How to Best Use This Chapter 335

Do I Know This Already? Quiz 336

Foundation Topics 339

Filtering IP Traffic 339

Standard IP Access Lists 341

Extended IP Access Lists 344

Named IP Access Lists 351

Access List Summary 353

Filtering IPX Traffic and SAPs 354

Q A 366

Scenarios 369

Scenario 7-1: IP Filtering Sample 1 369

Scenario 7-3: IP Filtering Sample 3 370

Scenario 7-2: IP Filtering Sample 2 370

Scenario 7-4: IPX Filtering 371

Scenario Answers 374

Answers to Scenario 7-1: IP Filtering Sample 1 374

Answers to Scenario 7-2: IP Filtering Sample 2 374

Answers to Scenario 7-3: IP Filtering Sample 3 375

Answers to Scenario 7-4: IPX Filtering 376

Answers to Task 1 for Scenario 7-4 376

Answers to Task 2 for Scenario 7-4 377

Answers to Task 3 for Scenario 7-4 378

8 WAN Protocols: Understanding Point-to-Point，Frame Relay，and ISDN 380

8 WAN Protocols: Understanding Point-to-Point，Frame Relay，and ISDN 380

How to Best Use This Chapter 381

Do I Know This Already? Quiz 382

Foundation Topics 385

Point-to-Point Leased Lines 385

HDLC and PPP Configuration 388

PPP 389

Frame Relay Protocols 390

How Address Mapping Works 402

Frame Relay Configuration 408

ISDN Protocols and Design 421

Multilink PPP 432

ISDN Configuration 433

Q A 437

Scenarios 440

Scenario 8-1: Point-to-Point Verification 440

Scenario 8-2: Frame Relay Verification 445

Scenario 8-3: Point-to-Point Configuration 451

Scenario 8-4: Frame Relay Configuration 453

Scenario 8-5: Frame Relay Configuration Dissection 455

Answers to Scenario 8-1: Point-to-Point Verification 458

Answers to Scenarios 458

Answers to Scenario 8-2: Frame Relay Verification 459

Answers to Scenario 8-3: Point-to-Point Configuration 461

Answers to Scenario 8-4: Frame Relay Configuration 464

Answers to Scenario 8-5: Frame Relay Configuration Dissection 469

9 Scenarios for Final Preparation 472

9 Scenarios for Final Preparation 472

How to Best Use This Chapter 474

Scenario 9-1 474

Scenario 9-1a—Planning 475

Scenario 9-1a—Planning Answers 477

Scenario 9-1b—Configuration 478

Scenario 9-1b—Configuration Answers 479

Scenario 9-1c—Verification and Questions 480

Scenario 9-1c—Verification and Questions Answers 489

Scenario 9-2 490

Scenario 9-2a—Planning 491

Scenario 9-2a—Planning Answers 492

Scenario 9-2b—Configuration 494

Scenario 9-2b—Configuration Answers 494

Scenario 9-2c—Verification and Questions 496

Scenario 9-2c—Verification and Questions Answers 505

Scenario 9-3 507

Scenario 9-3a—Planning 507

Scenario 9-3a—Planning Answers 510

Scenario 9-3b—Configuration 512

Scenario 9-3b—Configuration Answers 512

Scenario 9-3c—Verification and Questions 515

Scenario 9-3c—Verification and Questions Answers 528

A Decimal to Hexadecimal and Binary Conversion Table 530

A Decimal to Hexadecimal and Binary Conversion Table 530

B Answers to the Do I Know This Already? Quizzes and Q A Sections 540

B Answers to the Do I Know This Already? Quizzes and Q A Sections 540

Answers to the Chapter 2 Do I Know This Already? Quiz 541

Answers to the Chapter 2 Q A Section 543

Answers to the Chapter 3 Do I Know This Already? Quiz 549

Answers to the Chapter 3 Q A Section 550

Answers to the Chapter 4 Do I Know This Already? Quiz 555

Answers to the Chapter 4 Q A Section 557

Answers to the Chapter 5 Do I Know This Already? Quiz 562

Answers to the Chapter 5 Q A Section 564

Answers to the Chapter 6 Do I Know This Already? Quiz 573

Answers to the Chapter 6 Q A Section 574

Answers to the Chapter 7 Do I Know This Already? Quiz 579

Answers to the Chapter 7 Q A Section 581

Answers to the Chapter 8 Do I Know This Already? Quiz 587

Answers to the Chapter 8 Q A Section 588

Index 595

Index 595